Which action demonstrates a violation of facility rules by staff?

The choice indicating a "Prohibited Act" demonstrates a clear violation of facility rules by staff because it directly refers to actions that have been explicitly forbidden by the rules and regulations governing the facility's operations. Such acts may undermine safety, security, and the overall integrity of the facility, and they often encompass behaviors that staff members are trained to avoid.

In contrast, negligent supervision relates more to failure in oversight rather than an active violation of specific established rules, while malpractices may involve poor practices or behaviors that don't necessarily correlate with clear rule violations. Excessive force is a specific type of prohibited act but is more narrowly defined as the inappropriate application of physical force, which may not encompass all actions classified under prohibited acts. Therefore, identifying a general prohibited act encapsulates a broader range of potential violations of facility rules.